Directed by Lou Bellamy, the Off-Broadway revival began previews on Nov. 7 at Signature's home at the Peter Norton Space, 555 W. 42nd St. The show now gets an extra two weeks beyond earlier extensions.

The production's initial run (with tickets at $15 each) sold out quickly, and extensions followed (with tickets costing $55 each).

The $15 ticket initiative was made possible by the lead sponsorship of Time Warner Inc.

The $15 program will continue with the final play in the Signature August Wilson series, King Hedley II, running Feb. 20-April 15, 2007.

"In 1969 Pittsburgh, the regulars at a popular local diner grind out an existence against the backdrop of a turbulent world and rapidly changing city," according to Signature's Two Trains notes. "Memphis Lee looks to prevent the demolition of his restaurant in the face of a municipal project while across the street, Mr. West, the local funeral director, has more business than he can handle. Faced with racial inequality, a depressed economy and the threat of violence, the local residents fight to hang on to their solidarity and sense of community." The cast for Two Trains Running features Leon Addison Brown, Chad L. Coleman, Frankie Faison, Arthur French, Ron Cephas Jones, January LaVoy and Ed Wheeler.

For single ticket information, call (212) 244-PLAY (7529) or visit www.signaturetheatre.org.

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Next up is Wilson's King Hedley II (Feb. 20-April 15, 2007): "Set in a backyard in the decaying Hill District of Pittsburgh, King Hedley II follows the characters created by August Wilson in Seven Guitars. A woman is tormented by a secret she has kept for 36 years, while her only son returns home after serving time for murder to find a neighborhood riddled with crime, poverty and broken families. King's epic struggle to survive is at the center of this poetic portrayal of life in the inner city during the 1980s."